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Groups > comp.arch.embedded > #21471

Re: waveform display in browser

From Dimiter_Popoff <dp@tgi-sci.com>
Newsgroups sci.electronics.design, comp.arch.embedded
Subject Re: waveform display in browser
Date 2015-07-24 00:13 +0300
Organization TGI
Message-ID <morlak$pll$1@dont-email.me> (permalink)
References <q2b2rah6msviaqt4su4r6t3tgml9u8b5lg@4ax.com> <55B14FE8.3070806@electrooptical.net> <morjtb$jnr$1@dont-email.me>

Cross-posted to 2 groups.

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On 23.7.2015 г. 23:49, rickman wrote:
> On 7/23/2015 4:34 PM, Phil Hobbs wrote:
>> On 7/23/2015 2:18 PM, John Larkin wrote:
>>>
>>>
>>> I'm designing a tachometer box and it will have a web page interface
>>> as one way to talk to it. I thought it would be cool to include an ADC
>>> so we could display waveforms, too. My software guys here are mostly
>>> embedded types so we don't know a lot about Javascript and such. I did
>>> a little searching and mostly found things for displaying audio
>>> envelope cartoons; I want a real oscilloscope-looking thing, so users
>>> can see what happens as they change gains and filtering and trigger
>>> level settings. Dual trace would be nice, the analog waveform and
>>> corresponding comparator outputs.
>>>
>>> Has anybody done this? We'd consider getting outside help, either
>>> advice or actual coding.
>>>
>>> I assume our box will, through some port, deliver HTML, Javascript,
>>> and maybe some zipped JS libraries to the browser. And the company
>>> logo of course. The browser will send us text strings to parse if the
>>> user wants to change parameters or such. We would also deliver blocks
>>> of waveform data on request. That's my PHB perspective on things; I'm
>>> just the hardware designer.
>>>
>>>
>> One approach is a CGI script that runs gnuplot under the covers.  IIRC
>> quite a few folks do that.  (I'm a static HTML guy myself.)
>
> Isn't there an actual oscilloscope display package under Linux?  It
> should be fairly straightforward to drive that from an internet
> connection.  I guess requiring the customer to installing such a package
> is not preferred.
>

He is after a browser plugin - something like VNC, the way I do it
on our spectrometers (I do not use a plugin but I could if I wanted to).

However this implies a fullblown RFB connection to a stand alone
system having its display and GUI locally (within his oscilloscope
thing) which is far from being trivial.

Dimiter

------------------------------------------------------
Dimiter Popoff, TGI             http://www.tgi-sci.com
------------------------------------------------------
http://www.flickr.com/photos/didi_tgi/

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Thread

waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 11:18 -0700
  Re: waveform display in browser Joerg <news@analogconsultants.com> - 2015-07-23 11:53 -0700
  Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-23 16:34 -0400
    Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 16:49 -0400
      Re: waveform display in browser Dimiter_Popoff <dp@tgi-sci.com> - 2015-07-24 00:13 +0300
        Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 17:39 -0400
        Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 14:50 -0700
          Re: waveform display in browser Dimiter_Popoff <dp@tgi-sci.com> - 2015-07-24 01:19 +0300
            Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 15:30 -0700
              Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 18:46 -0400
              Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-23 17:54 -0500
                Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 16:22 -0700
                Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-23 19:56 -0400
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 14:55 -0500
                Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-24 14:11 -0700
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 17:00 -0500
                Re: waveform display in browser Herbert Kleebauer <klee@unibwm.de> - 2015-07-25 09:04 +0200
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 14:58 -0500
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 20:15 +0000
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 16:48 -0500
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 22:08 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:46 +1000
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-25 14:32 +0000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 22:44 +0000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 23:31 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:49 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 09:28 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 08:43 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 22:27 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 20:57 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 22:41 +0000
                Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-24 22:03 -0400
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 15:05 -0500
  Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-23 21:37 +0000
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 15:32 -0700
  Re: waveform display in browser Martin Riddle <martin_ridd@verizon.net> - 2015-07-23 20:24 -0400
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 21:08 -0700
      Re: waveform display in browser Martin Riddle <martin_ridd@verizon.net> - 2015-07-24 07:52 -0400
        Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 14:08 +0000
          Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:53 +1000
            Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 09:46 +0000
              Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 08:46 +1000
  Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 00:37 +1000
  Re: waveform display in browser Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2015-07-24 11:46 +0100
  Re: waveform display in browser YD <ydtechHAT@techie.com> - 2015-07-24 14:25 -0300
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-24 10:55 -0700
      Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-24 14:09 -0400
      Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 18:42 +0000
        Re: waveform display in browser YD <ydtechHAT@techie.com> - 2015-07-24 19:12 -0300
          Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-25 14:36 +0000
      Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-24 14:55 -0400
  Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-27 17:52 -0700
    Re: waveform display in browser Phil Hobbs <hobbs@electrooptical.net> - 2015-07-28 17:58 -0400
  Re: waveform display in browser "jurem" <51422@EmbeddedRelated> - 2015-07-28 09:49 -0500

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